add up to

US /æd ʌp tuː/
UK /æd ʌp tuː/
"add up to" picture
1.

to result in a particular total

:
The numbers don't add up to what I expected.
All these small expenses quickly add up to a large amount.
2.

to make sense or seem reasonable

:
His story just doesn't add up to me.
There's something about this situation that doesn't quite add up.